They probably wouldn't because they'd need to pay staff and for resources running it. I bet there's a break even number that's several multiples of 2500 players.
That could be true. I always thought CoH/CoV was one of those games that was shut off before it was time.That's only 2500 online concurrently. The actual number is (normally) about 10-20 times that.
For example, I know of a game that has ~200 CCUs that has 80,000 MAUs (monthly active users) - I'd imagine the figure for CoH to be in the hundreds of thousands based on data reported alone.